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(No Model.) 4 SheetsSheet 1. B. F. HAUGH.

MACHINE FOR GURVING IRON BARS 0R BEAMS. No. 446,132. Patented Feb. 10,1891.

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(No Model.) 4 Sheets-Sheet 2.

B. P. HAUGH. MACHINE FOR GURVING IRON BARS OR BEAMS.

No. 446,132. PatentedI'eb. 10, 1891.

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(No Model.) 4 Sheets She.et 3. B. F. HAUGH. MACHINE FOR GURVING IRONBARS OR BEAMS. No. 446,132.

Patented Feb. 10,1891.

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. 4 Sheets+Sheet 4. B. P. HAUGH. MACHINE FOR GURVING IRON BARS 0B.BEAMS.

Patented Feb. 10,1891.

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WITNESSES: INVENTOI? UNITED TATES ATENT OFFICE.

BENJAMIN F. I'IAUGH, OF INDIANAPOLIS, INDIANA.

MACHINE FOR CURVING IRON BARS OR BEAMS.

SPECIFICATION forming part of Letters Patent No. 446,132, dated February10, 1891. Application filed September 22, 1888. $erial No. 286,105. (Nomodel.)

To all whom, it may concern:

Be it known that I, BENJAMIN F. HAUGH, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Machines forCurving Iron Bars or Beams, of which the following is a specification.

The object of my said invention is to produce a machine by which beams,angle-irons, or other similar forms of iron bars (used principally inarchitectural iron-work) may be brought to a uniform degree of curvaturethroughout their length in an inexpensive and expeditious manner.

Referring to the accompanying drawings, which are made a part hereof,and on .which similar letters of reference indicate similar.

parts, Figure 1 is a top or plan view of a machine embodying my saidinvention, the inner endof the shaft Gbeing, however,broken away to showthe shaft Hand other parts below; Fig. 2, an end elevation thereofshowing the driving mechanism; Fig. 3, a view, partly in elevation andpartly in section, as seen when looking upwardly from the dotted line 33 in Fig. 1; Fig. l, a detail view looking toward 'the left from thedotted line 4 4 in Fig. 1; Fig. 5, a View looking toward the right fromthe dotted line 5 5 in Fig. 3; Figs. 6, 7, and 8, detail views showinghow different forms of bars are operated upon by the rolls, the form ofrolls shown in Fig. 8 being also slightly diiferent; Fig. 9, a similarview showing an alternative form of rolls; Fig. 10, a view of thedriving and intermediate pinions and their connections and adjacentparts, similar, except in position, to a portion of Fig. 4; Fig. 11, ahorizontal sectional View of the same on the dotted line 11 11in Fig.10; Fig. 12, a transverse vertical sectional view looking toward theleft from the dotted line 12 12 in Fig. 10; and Figs. 13 and 14,

. views similar to Fig. 10, except that the pinions are in differentpositions, two of them being shown in Fig. 14 as disengaged and out ofuse, illustrating the extreme adjustment in one direction, as Fig. 10does in the other.

In said drawings, the portions marked A represent the frame-work of themachine; B, O, and D, the operating-rolls; E, a shaft by which, throughsuitable gears and screwshafts, the central rolls are raised andlowered; F F, said screw-shafts; G, a drivingshaft carrying thebelt-pulleys; II, an intermediate shaft, and I, I, and 1 intermediatepinions by which the gears on the roll-shafts are connected.

The framework A may be any suitable frame-Work for supporting theoperating-rolls and driving and adjusting mechanism and has the bearingsfor the various shafts mounted thereon. That portion A which carries thedriving mechanism is adjustable as a whole upon said frame A,beingmounted and secured thereon by any suitable mechanism to permit theadjustment, such as the tongueand-groove connection (shown most plainlyin Fig. 3) and the set-screws o for securing it in position. Large nuts(1 are inserted in mortises in the frame-work, as shown most plainly inFig. 3, through which screw-shafts F F pass. Extending up from the partA are standards a, which carry the belt-shifter A The arrangement of therolls B, C, and D is most clearly indicated in Fig. 5. As shown in Figs.1 and 3, the preferred form of these rolls includes two parts, orperhaps, more strictly speaking, there are pairs of rolls, thebefore-mentioned rolls being accompanied by counterparts B, O, and Darranged upon the shafts alongside thereof, and the rolls of said pairsare adjustable toward and from each other, so as to accommodate wider ornarrower bars or beams of iron. Said rolls are shown as secured on theirrespective shafts by means of splines b, c, and-d, and setscrews b 0 andd are provided in their respective hubs to secure them in any desiredposition; but of course other means could be substituted for thispurpose without departing from my invention.

In Fig. 9 I have shown a V-shaped form of rolls, which I employ when itis desired to curve an angle-iron on the plane of its median line, andinFigs. 6,7, and 8 I have shown the rolls separately (similar to thoseshown in the principal figures) with the various forms of iron beams andbars in seotion between them, illustrating how my invention operates onthese several forms.

In order to produce agreat-er or less curva- IO the screw-shafts F andF.

and F pass down through the large nuts fit ture in the iron beingoperated upon, it is necessary to adjust the rolls, and this I do inmost casesthrough the medium of the shafts E, F, and F and the gearsconnecting them,

5 by means of which the central roll 0 may be in the frame-work andengage with the bear in gsin which the shaft of theroll O is mounted,and thus by revolving the shaft E (by means of the spider J thereon orotherwise) said shafts F and F are turned and the roll 0 elevated ordepressed, and the curvature in the iron bar or beam being operated uponis varied accordingly.

The shaft G carries the tight and loose beltpulleys G and G by which,through a suitable belt running from apower-shaft, the machine isdriven. The belt-shifter A is employed to shift the belt from one ofthese pulleys to the other in the usual and wellknown manner. Upon theend of this shaft G is a spur-pinion g, which engages with the spurgear-wheel h on the shaft H, and through these gear-wheels said shaft 11is driven.

The shaft H, as well as the shaft G, is

mounted in the part A of the frame-work, which, as before described, isadjustable on the main frame-work A. As above stated, it carries uponthe outer end the gear-wheel h,

5 through which it is driven, and nearitsinner end the pinion I ismounted thereon, which engages with the spur gear-wheelD upon one sideand the pinion 1' upon the other, the connection beingcontinued on thisside through the pinion 1 to the gear-wheel D on the 5 same horizontalplane, one being adjustable toward theother, and the support of thesecond I being in the form of toggle-links 2', by which its position ispermitted. to be varied. By this means an adjustment of the roll shaftsb and cl toward or from each other is provided for, when, as issometimes the case, it is desired that the radius of the curvature to beproduced in the iron operated upon be shortened.

As will be noticed by an examination of Fig. 4, the bearings are alladjustable, except those for the shaft H, and the adjustment of thisshaft and the pinion thereon is provided for' by making the part A ofthe frame ad- "60. j ustable.

When it is desired to effect the adjustment last described, thefastenings to the various bearings are loosened and (supposing it isdesired that the shafts b and d shall be nearer together) the frame partA is moved somewhat to the left and secured, the bearings carrying theshaft (Z are similarly moved and secured, then the hearings to the shaftof the pinion I are moved to the right (the pinion I being at the sametime raised) and secured, and, finally, the hearings to the shaft I) aremoved to the right and secured, care beingof course taken that thevarious gear-wheels shall engage properly, as before. The pinion I beingfree to move up and'down as the pinions I and I" are brought nearertogether 'orfarther apart, and being coupled to said pinions by thelinks, as shown, the same movement is maintained throughout thetrain ofgearing as well when in one position as in another. then it is desiredthat the shafts Z2 and cl and the rolls thereon shall be farther apart,the.

operation just described is of course reversed. The purpose of adjustingthese shafts b and d nearer to or farther from each other is to secure agreater or less curvature in the bars or beams being treated, and insome cases to continue the curving to points somewhat nearer to orfarther from the extreme ends of the beams. The former purpose issupplementary to that for which the roll-shaft c is given a verticaladjustment. The latter purpose is not substantially modified by anyadjustment of said roll-shaft c. It is also convenient to have theserolls at greater or less distances from each other in treating larger orsmaller sizes of bars or beams.

When it is desired to curve or vary the curvature of an iron bar orbeam,the machine is first adjusted correspondingly and the end of thebeam inserted properly be tween the rolls, which, through the mechanismdescribed, are contin ually driven forward, and the beam or bar thuscarried through, producing the result desired.

In many cases in treating very long iron it is inconvenient to use amachine having its rolls in a horizontal position, and I thereforebysome modifications of construction sometimes construct my machine sothat the rolls are in vertical position. I do not, however, regard thisas a departure from my invention, as the machine is in all the essentialfeatures substantially the same.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, in a machine for curving iron bars or beams, of theframe A, the frame A, adjustably secured thereon, the several sets ofoperating-rolls adj ustablyarranged in said frame A, and the drivingmechanism geared to the shafts thereof and mounted on the adjustableframe A, substantially as set forth.

-2. The combination, in a machine for curving iron bars or beams, of theframe A, the operating-rolls B B, O O, and D D, arranged in pairs andadjustably mounted on their shafts, said shafts supported in hearing adjustably mounted on said frame A, the frame A, ad justably mounted onsaid frame A, and the driving mechanism mounted on mounted,substantially as shown and desaid frame A and geared to the operatingscribed. rolls, substantially as set forth. In Witness whereof I havehereunto set my 3..The combination, in ainachine for curvhand and seal,at Indianapolis, Indiana, this 5 ing or varying the curvature of ironbars, of 18th day-of September, A. D. 1888.

three sets of rolls and a train of 'earin for 7 T A driving the same,consisting of spur gear- BEA JAMIN HAUGH' wheels upon the shafts of theend rolls, three \Vitnesses: intermediate spur-pinions, and toggle-linksO. BRADFORD, 10 upon which the central one of said pinions is O. \V. H.BROWN.

